You’re taking a turn, and there it is—click-click-click. If you drive a Subaru, especially an Impreza, Forester, or Outback, that noise isn’t just an annoyance. It’s a sign something in your drivetrain or suspension needs attention.
A worn CV joint is usually the cause, but loose tie rods, ball joints, or even differential issues can cause similar sounds.
The trick is figuring out when and how it happens—only at low speeds, under acceleration, or when the wheel is fully cranked.
Let’s go through the most likely causes and what you can do before it turns into a bigger problem.
1. Constant Velocity (CV) Joint Issues
If your Subaru clicks when turning, the outer CV joint is the first place to check. These joints transfer power to the wheels while allowing movement in different directions, but they wear out over time—especially in older models like the 1995–2007 Impreza or 1998–2008 Forester.
Outer CV Joint Wear or Damage
A failing outer CV joint makes itself known with a rapid, rhythmic clicking that gets louder as you turn sharper or accelerate through a curve. The reason? The joint’s internal bearings are losing their smooth motion, grinding against each other instead.
One of the most prominent warning signs is a torn CV boot. This rubber sleeve keeps grease inside and dirt out. If it cracks, grease escapes, road grime sneaks in, and the joint wears down fast. Grease splattered around the wheel well or suspension is a clear sign of trouble.
How to Check It
Turning the wheel to full lock and listening for a clicking noise is a quick test. If the sound worsens in a tight turn, the outer CV joint is likely worn.
Checking under the car for grease leaking from the CV boot can confirm the issue. If the boot is torn, the joint inside has probably already started to degrade.
If the boot looks fine, lifting the front wheel and rotating it by hand can help. A rough or loose feeling in the axle may point to internal wear.
Fixing the Issue
A clicking CV joint isn’t something you can ignore. Eventually, it will fail completely, leaving you stranded. If the boot is just starting to crack and no dirt has gotten in, repacking it with grease and installing a new boot might buy some time. But if the joint is already clicking, replacement is the only real fix.
Most shops replace the entire axle assembly rather than just the joint because it’s often more cost-effective. To avoid fitment issues, the replacement needs to match Subaru’s OEM specifications, including the length and spline count.
2. Inner CV Joint or Axle Shaft Play
When it starts to wear, the sound is different. Instead of a sharp click, it’s more of a dull knock or a soft tap that shows up under acceleration while turning.
Tripod Bearing or Tulip Housing Wear
Inside the inner CV joint, a tripod bearing slides within a housing—often called the tulip. Over time, that bearing loosens up, creating slack.
The result? A faint clunking or knocking that’s easy to brush off at first but gets worse under load. Unlike the outer joint, this one doesn’t always scream for attention. It’s more like a quiet reminder that something’s wearing down.
The best way to check is to lift the car and grab the axle where it meets the transaxle. If you feel more movement than there should be or notice a dull knock when you rock it back and forth, the joint is on borrowed time.
Fixing the Issue
If the boot is still intact and the noise is mild, you might be able to stretch its life a little longer. But if there’s noticeable play, the joint is wearing internally. Since Subaru’s inner CV joints aren’t typically sold separately, replacing the whole half-shaft is the way to go.
Once the new axle is in, double-check that it’s fully seated in the transaxle and torqued properly. A poorly fitted axle won’t just make noise—it can lead to even bigger headaches down the road.
3. Steering or Suspension Component Anomalies
If the CV joints check out but your Subaru still clicks when turning the front suspension is the next suspect. Worn tie rod ends, ball joints, or sway bar links can all produce clicking or knocking sounds, especially when the steering loads up.
Tie Rod End or Ball Joint Play
The tie rod end connects the steering rack to the wheels, while the ball joint lets the suspension pivot. If either one develops slack, it can create a metallic click when turning—sometimes more noticeable at low speeds or when quickly rocking the steering wheel left and right.
A worn tie rod can also make the steering feel loose or vague, while a bad ball joint might introduce a clunk over bumps. If the clicking sound is paired with steering that doesn’t feel as sharp as it used to, one of these parts is likely the problem.
Lifting the front end and wiggling the wheel side to side can help confirm it. If there’s noticeable play in the tie rod end, it’s time for a replacement. If the ball joint moves inside its socket when pried with a bar, it’s worn out.
Fixing the Issue
Ignoring a loose tie rod or ball joint isn’t an option. Left too long, either one can fail completely, leading to dangerous steering problems. Replacing them is straightforward, but alignment is required afterward to restore proper handling.
Cheap aftermarket parts might seem like a bargain, but they wear out faster. Sticking with OEM or high-quality replacements ensures the fix lasts.
Sway Bar End Links or Bushings
If the clicking is more of a light tap and happens when turning over uneven ground, sway bar end links or bushings might be the issue. The end links have small ball joints that can develop play and worn bushings let the bar shift slightly, creating noise.
A quick inspection can reveal if the end link joints are loose or the bushings are cracked. Replacing either one is simple and usually quiets things down.
4. Driveline or Differential-Related Clicking
If the CV joints and suspension check out, but the clicking is still there, it’s time to look deeper into the drivetrain. Subaru’s all-wheel-drive system is tough, but worn differentials, transfer gears, or LSD clutch packs can create noises that mimic a failing axle.
Front or Center Differential Issues
Subaru’s AWD system relies on a front differential inside the transmission and sometimes a center differential or viscous coupling. If gears inside the diff start to wear, they can produce a rhythmic clicking or chattering sound, especially during slow, tight turns.
A worn limited-slip differential (LSD) can also make noise, particularly if the wrong gear oil is used. Subaru LSDs require specific friction modifiers to keep clutch packs from grabbing too aggressively. If the noise started after a recent fluid change, using the wrong oil could be the issue.
A failing front differential might also leave clues in the fluid. Checking the gear oil for metal shavings can confirm whether internal wear is happening. If the fluid is low, dark, or has a metallic shimmer, there’s likely some gear damage inside.
Fixing the Issue
If the differential is just starting to chatter, swapping in fresh gear oil with the correct additives might smooth things out. But if the noise persists, a deeper issue is at play.
A severely worn differential will only get worse, eventually leading to rough engagement, binding, or even total failure. Rebuilding or replacing the diff is the only real fix at that point.
If the clicking comes from the center differential, the issue could be a failing viscous coupling, common in higher-mileage Subarus. Replacing the coupling is possible, but it’s a labor-intensive job, often making a used or rebuilt transmission the better option.
5. Loose Hub or Wheel Bearing Issues
Clicking when turning isn’t always about CV joints or differentials. Sometimes, the issue is right at the wheel hub.
A loose or failing wheel bearing can create a range of noises, and while humming or grinding is more common, a worn bearing can also produce a rhythmic clicking under load.
Bearing Looseness Leading to Clicking
A wheel bearing is designed to keep the wheel spinning smoothly while handling all the forces from the road. When it starts to wear, tiny gaps develop inside, allowing slight movement in the hub.
If the bearing is badly worn, that play can cause a faint clicking or snapping sound, especially when cornering or shifting weight from one side to the other.
The easiest way to check is by lifting the car and grabbing the wheel at the 12 and 6 o’clock positions. If there’s noticeable movement when you push and pull, the bearing is loose.
Another way to confirm is by spinning the wheel by hand—if it feels rough or makes a faint grinding noise, the bearing is on its way out.
Fixing the Issue
A loose wheel bearing isn’t just an annoyance; it’s a safety risk. If ignored, it can overheat, seize up, or even cause the wheel to detach.
Replacing a worn bearing means either pressing in a new one or swapping the entire hub assembly, depending on the model.
After installation, torquing the axle nut to Subaru’s factory spec is critical—too loose, and the bearing will wear out fast; too tight, and it can fail prematurely.
Final Thoughts
Clicking when turning in a Subaru is usually a CV joint waving a white flag, but that’s not the only possibility. A worn tie rod, loose ball joint, or even a failing differential can create similar noises.
The key is paying attention to when and how it happens—under acceleration, at full lock, or during slow-speed maneuvers.
A torn CV boot with grease everywhere? That joint is done. Steering feels loose with a metallic click? Check the tie rods and ball joints. Noise coming from the center of the car? The differential might be wearing down.
Catching the problem early can save you from bigger headaches later. Whether it’s replacing an axle, tightening up the suspension, or swapping differential fluid, fixing it now means avoiding a breakdown when you least expect it.
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